Method for reliable realization of a φ Josephson junction

N. G. Pugach; E. Goldobin; R. Kleiner; D. Koelle

doi:10.1103/PhysRevB.81.104513

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Method for reliable realization of a φ Josephson junction

N. G. Pugach, E. Goldobin, R. Kleiner, D. Koelle

DOI 10.1103/PhysRevB.81.104513 · Physical Review B

T1

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Abstract

We propose a method to realize a φ Josephson junction by combining alternating 0 and π parts (sub junctions) with an intrinsically nonsinusoidal current-phase relation (CPR). Conditions for the realization of the φ ground state are analyzed. It is shown that taking into account the nonsinusoidal CPR for a “clean” junction with a ferromagnetic (F) barrier, one can significantly enlarge the domain (regime of suitable F-layer thicknesses) of the φ ground state and make the practical realization of φ Josephson junctions feasible. Such junctions may also have two different stable solutions, such as 0 and π, 0 and φ, or φ and π.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown